Telemotor apparatus.



Patented Nov. 2l, |899. A. B. BROWN.

TELEMUTUB APPARATUS.

(Appnmion med me. s1, 1,397.)

2 Sheets-Sheet l.

(ND Model.)

Patented Nnv. 2|, |899. A, B. BBowN. Tl-:Lemoon APPARATUS.

(Application lred Dec. 31', 1897.)

2 Sheets-Sheet 2.'

l(No Model.)

infill/f bf Fig. 5.

' PATENT rtree.

ANDREW BETTS BROWN, OF EDINBURGH, SCOTLAND.

TELEMOTOR APPARATUS.

SPECIFICATION forming part of Letters Patent No. 637,705, dated November 21, 1899.

Y Application filed December 312.1897. Serial No. 664,801. (No model.)

To all whmn it may concern,.-

Beit known that I, ANDREW BETTs BROWN, of Edinburgh, in the county of Mid-Lothian, Scotland, have invented certain new and useful Improvements in Signaling Apparatus, of which the following is a specification.

My said invention relates to telemotor or signaling apparatus in which movements are transmitted by means of water or other liquids in pipes arranged between the points of transmission and reception in whatever manner may be most convenient in each case, exact correspondence between the transmitting and receiving parts being secured by causing the two pipes through which opposite movements-are transmitted to communicate with each other, and thereby have the pressure in them equalized whenever the parts are in their middle positions.

The object of the invention is to provide an apparatus of this nature having devices for indicating a transmitted movement and retaining the indication until certain other movements are transmitted, the invention being designed more especially for conveying signals from the bridge or corresponding part of a vessel to the engine-room. v The invention is illustrated in the accompanying drawings, in which- Figure 1 of the ldrawings is a transverse vertical section, andFig. 2 is a longitudinal vertical section,of the transmitting part of the hydraulic telemotor. 4Fig. 3 is a side elevation, Fig. 4 a front elevation, and Fig. 5 a sectional plan, of the receiving and indicating parts of the hydraulic telemotor. Fig. 52 is an enlarged detail view ofV the central portion Fig. 5b is a detail of one of the wheels, as D2, and the ,corresponding armature. Fig. 6 is a longitudinal vertical section of the receiving part of the hydraulic teleymotor drawn to a slightly-larger scale. Fig. 7 is an enlarged sectional view of one end of the transmitting cylinder and piston and showing more clearly the by-pass.

In the drawings the same reference-letters are usedto mark the same or like parts whenever they are repeated.

The transmitting part of the hydraulic telemotor (shown in Figs. 1 and 2) consists of a hydraulic cylinder A, provided at each end lwith a casing A', containing a safety-valve to allow for excess of pressure. The cylinderA contains a piston A2, formed with transverse rack-teeth which gear with a pinion A2, fastened on a spindle A4, turned. by a suitable handle. (Not shown.) The cylinderAis connected by pipes A5 and A6 to the receiving part of the hydraulic telemotor and the system is filled With glycerin, oil, or other liquid. The receiving part of the hydraulic telernotor consists of a hydraulic cylinder B, similar to the transmitting-cylinder A and containing a similar piston'B' and pinion B2. The piston B has a rod B3 extending from it and inclosed by an'extension of the cylinder B, this rod having encircling it a spring B4, which is arranged to make the piston B tend to return to its middle or neutral position. The pinion B2 is fastened on a spindle B5, which projects outthrough a stuffing-box B6, and has on its outer end a radial arm` O. When the transmitting-piston A2 is moved, the receiving-piston B is correspondingly moved by the displaced liquid and by means of its rack-teeth the pin'- ion B2 and the spindle B5, carrying the radial arm O. On the radial arm O there is fixed a pin C', which acts on one or other of two radial arms or pointersD and F, fixed on bosses or sleeves D' and F', which are loose on the spindle B5. One of the pointer-arms D or F is acted on for ahead orders and the other for astern orders, each remaining at rest when the other is moved. On the boss of each pointerarm D F there is a toothed wheel D2 F2, with which there engages a catch D3 F3, held by the armature D? F4 of an electromagnet D5 F5, and when either pointer-arm is moved to a position, such as that in which the pointerD is shown in Fig. 4, indicating on a dial Gr the order transmitted it is retained there by the catch D8 F2, while the spindle-arm O may return to its middle or neutral position, inv

which it is'shown in Fig. 4.. When the spindle-arm C is in the position referred to, a communication becomes open between the two telemotor-pipes A5 and A6, by 4means of the openings A7 and A8 and the by-pass A9 in the transmitting-chamber A, this communication being arranged to be open when the spindle-arm is at any point within a suitable distance on each side of the middle point, but to be closed by the passage of the ends of the piston beyond the openings or ports A7 and A8. rPhe ends of the piston are preferably proya false reading in the receiver-dial.

ample, suppose A2 be in the positionto establish the communication referred to and B2 had leaked and was out of the neutral position, giving a reading on the dial, then the correcting-spring fitted to the end of piston being in compression in one direction or thev other will be able to push B2 back to its neutral'position alsoon account of a free communication being made throughout the hydraulic system.

Hence itwill be seen that the whole systemV cannot get out of adjustment, as itwill autotomatically adj ust itself so long as the piston A2 shall occasionally be returned to its neutral position, uncovering the by-pass openings at both ends ofthe cylinder A. The

armatures Di4 F4, to which the ca/tches D3 F3 are fixed, are held by spring-blades D6 andF, attached to asmall bracket G on the dial G, and thespring-blades have also clappers D7 F7, `arranged to act on a bell H, attached to a small bracket H on the upperpart-of the dial. When either poin ter-arm D F is moved from the neutral position, the action of itsv toothed wheel D2 F2 on the catch D8 F3 causes the armature D4 F4 to reciprocate and its clap-v per D7 F7 to strike the bell H. On the eng-ineer noticing and attending to an order he transmits a suitable reply to the apparatus at the bridge by separate means provided for the purpose, and thereafter the spindle of the engine-room apparatus becomes free to return to its middle position. When the spindle B7 is in the middle position into which it has to be moved by means of the transmittingpiston A2, which is actuated by hand, a piece l (not shown) on itor its arm C makes contact in the electric circuit, which excites the electromagnets D5 F5, the armatures D4 F4 of which are thereby made to reciprocate. Each pointer-arm boss D F' is connected to a Y spring D8 FS, attached to studs D9 F9, fixed in the dial G, the spring being arranged, to turn the arm back to the neutral position when not held by the catch D3 F4, and as each rev until it reaches the neutral position.

Instead of employing electromagnets D5 F5 to withdraw the catches Ds F3 and ring the -bellH while doing so any suitable mechan- The reason' For ex-` that they will be moved apart when the rope or cord is pulled, the same or other levers also acting on the bell-clapper.

I claim as my inventiou- 1. In combination, the transmitting and re yceiving cylinders and pistons with Huid-pipes connecting said cylinders, the rotary shaft operated by the receiving-piston, the dial, the independently-movable indicating-arms and means carried by the shaft for operating one or the other of said pointers, substantially as described.

2. In combination', the transmitting and receiving cylinders and pistons with fluid-pipes connecting said cylinders, the rotary shaft operated by said receiving-piston, the dial, the independent indicating arms, means whereby the rotation of the shaft will move one or the other of the arms according to the direction of rotation, and means for,l temporarily retaining the indicating-arm in its indicating position, substantially as described.

3. In combination, the transmitting and receiving cylinders and pistons, with fluid-pipes Vconnecting said cylinders, the rotary shaft operated by the receiving-piston, the dial, the independently movable indicating arms located in proximity to said dial, the projection "carried-bythe shaft adapted to move one or the other of the indicating-.arms according to the direction of rotation of th'e shaft, and means operated independent of the rotation of the shaft forreturning the moved indicating-arm to normal position, substantially as sdescribed.

.4.; In combination, the transmitting and receiving cylinders with operating connections, the rotary shaft operated by the receivingpiston, the dial, the indicating-arms loosely mounted on the shaft, the projection carried by said shaft adapted to move one or the other of the indicating-arms according to the direc- -tion of rotation, the alarm, means for causing the movement of the arms to soundthe alarm, means for retaining each indicating-arm when operated in its indicatingposition, and means for returning indicating-arms to normal position, substantially as described. A

. In combination, the transmitting cylin- 'ders and pistons, the rotary shaft operated `by the receiving-pistom/the dial, the indel pendent indicating-arms loosely mounted on the shaft, the projection carried by the shaft Vadapted tomove one or the other of the arms according to the direction of rotation, means 1 tending to restore said arms to normal posivciprocation of the armature D4 F4 withdraws y the catch the arm turns back step by step;

tion, toothed wheels carried by the arms, spring-pawls adapted to engage said toothed wheels to hold the arms in indicatingl position, and means for moving said paw-ls to release the wheels, substantially as described.

6. In combination, the transmitting cylinders and pistons, the rotary shaftioperated by the receiving-piston, the dial, the independent indicating-arms loosely mounted on the shaft, the projection carried by the shaft adapted to move one or the other of the arms IOO according to thedirection of rotation, means tending to restore said arms to normal position, toothed wheels carried by the arms, an alarm-bell, spring-arms carrying bell-clappers, pawls on the spring-arms adapted to be operated by the movement of the toothed wheels to sound an alarm and also adapted to retain the toothed wheels in their moved positions, armatures carried by the springarms, and eleotromagnets for attracting the armatures to release thel toothed wheels to allow the indicating-arms to return to normal position, substantially as described.

7. In combination, the transmitting cylinder and piston, the rotary and longitudinallymovable shaft adapted to be rotated by said receiving-piston, the dial, the indicating-arms loosely carried by the shaft, a projection havname to this specification in the presence of 3o two subscribing witnesses.

ANDREW BETTS BROWN.

Witnesses:

GEORGE COBB, FREDERICK PIATT. 

